Creasing machine



S. SMITH.

CREASING MACHINE. APPLICATION FILED MAR. 15. I920.

1,484,162, mma (M311, 1922,

3 SHEETSSHEET I.

f, Z'g. i

172 yen??? 5a) all S 111 z'ik Z357 v 6M diiorvzegs 8. SMITH.

'CREASING MACHINE.

APPLICATION FILED MAR. 15

Patented 00% 311, 119 1 3 HEETS-SHEEI 2- Patented Oct S. SMITH.

CBEASING MACHINE. APPLICATION FILED MAR. 15. 1920.

Qmmzeys i atentee'i Get. 31, 192

UNHTED SWAN SMITH, O33 WHITE BEAR, MINNESGTA,

CREA SING MACHINE.

Application filed March 15, 1920. Serial No. 366,105.

To all whom it may concern Be it known that I, SWAN SMITH, a citizen ofthe United States, residing at \Vhite Bear, in the county of Ramsey andState of Minnesota, have invented a new and useful Creasing Machine, ofwhich the following is a specification.

"My invention relates to improvements in creasing machines.

Its object is to provide a machine of this kind, supplied with coactingdies carried upon adjacent rotors and ada ted to be quickly, easily, andaccurately ad usted upon said rotors.

A further object is to provide coacting male and female diesparticularly, though not exclusively, for creasing paper, the femaledies having readily expansible and contractible members to suitdifferent dies or different members of reversible male dies.

A further object is to provide a female die for creasing paper, said diebeing supplied with a self adjusting seat adapted to avoid the shearingeffect, which would otherwise result as the male die registers with thefemale die and eject the creased paper from the female die, as the maledie is withdrawn therefrom.

A further object is to provide coacting male and female dies forcreasing paper, the former presenting a concave bearing surface tothe'paper, whereby the pressure of the male die against the paper isexerted along the inner lines of fold within the crease, thus avoidingcompressing the paper throughout the base of the channel and at the sametime forming well defined lines upon which the sides of the channel areturned.

A further object is to provide in a device of this kind, an indicatoradapted to turn with a rotor and a stationary graduated scale injuxtaposition to said indicator to aid in procuring desired adjustmentsof the dies upon said rotors.

In the drawings, Fig. 1 is a side elevation of a machine embodying myinvention; Fig. 2 is an end elevation thereof; Fig. 3 is an elevation indetail illustrating a portion of one of the female dies, a sectionthereof being broken away to show parts otherwise concealed; Fig. 4: isa sectional view taken on the line 4% of Fig. 3; Fig. 5 is a similarview taken on the line 55 of Fig. 3; Fig. 6 is a sectional view indetail taken on the line 6-6 of Fig. 1 and illustrates particu-- larlyone of the stops for securing the dies in registration; Fig. 7 is adetail view illustrating the arm for Withdrawing said stop and Fig. 8 isa detail sectional view showing a clamp for adjustably securing the endof a die holder upon its supporting wheel.

In the drawings, 1 have used the reference numeral. 10 to indicate aframe. Shafts 11 journaled, one above the other, in said frame areconnected through gears 12 thereon. Power for turning these shafts maybe applied to either shaft in any suitable manner. Aligned supportingwheels13 having rims 14 of considerable width are secured to said shafts11. Die holders comprising holder bars 15 T shaped in cross section andsupplied with bevelled lugs 16 at the opposite ends thereof, areacljustably secured in axial relation upon the rims 14 of the supportingwheels 13. In Fig. 8; I have illustrated a clamp 17 which I prefer toemploy in adjustably, securing said holders upon the supporting wheels.These clamps 17 have pivotal bearings at one end thereof in depressions18 in the holder bars 15, the free ends of said clamps overlapping themargins of adjacent rims 14c and removably held thereagainst by means ofbolts 19 passing through bores 20 in said clamps and fitted in threadedbores 21 in said holder bars. Female dies A are carried by one set ofholder bars 15, each including laterally expansible and contractiblemembers or bars 22 having threaded bores therein. Stub shafts 24revoluble in a holder bar 15 are supplied with oppositely threadedportions 25, which are fitted in the threaded bores 23 of said diemembers 22 and carry said. members. Each stub shaft 2 1 carries a spurgear 26 which meshes with a rack-bar 27, slidably mounted upon bolts 28,threaded in aholder bar 15. A shifting gear 29 j ournaled on one of thedie members 22 is formed with a key receiving projection 30 and isdesigned to shift the adjacent rack-bar longitudinally, thereby turningthe stub shafts 2A and opening or closing the die members 22. Interposedbetween said die members 22 of each female die is a yielding bar or seat31. Guides 32 attached to said seat slide in bores 38 in the holder bar15 and coiled springs 34, also in said bores 33 and abutting againstsaid guides, operate to yieldingly depress the seat or bar 31. Pins 35,anchored in the holder bar and passing through ways 36 in the sides ofsaid guides, limit the outzontally in a guide 42 on the frame 10.

ward movement of'said bar through the action of said springs 34:.

Male dies B are carried by one set of holder bars 15.These-barsareformed with longitudinal grooves 37 therein to receive saidmale dies. In my preferred structure, I employ reversible male dies,each comprising a creasing bar, oneside thereof beingreduced in.thickness as compared with the other side. These creasing bars arereversible edgewise within the grooves 37 in the holder bars and aresecured in selected positions within said grooves by means of set screws38 threaded'in the holder bars. The narrow sides or bearing surfaces 39of the male dies are concave. By this arrangement, the maximum pressureisv applied to paper stock'along the inner lines of fold at the base ofthe creases or channels formed between the male and female dies. This isadvantageous for the reason that the lines of fold are definitely scoredwithout distorting the stock in the base of, the crease or channel.

In adj usting; companion dies upon the supporting wheels 13, said wheelsare first turned; to positions, wherein said dies rest in registration.Similar stops 40 are furnished to secure said dies in such registeringpositions and thus hold the, same after the clamps 17 are temporarilyloosened and while the supporting wheels 13 are turned to secure adifferent relation between said wheels and dies. Said stoos 4,0 arelaced upon opposite sides of'the frame, eac having a beveled socket l1therein to receive the beveled lugs 16 on the ends of adjacent holderbars 15.. Each stop 4.0 SllClGSllOilr '11 annular shoulder 43 on a stop40 fits in a bore 44: in the frame 10 and a coiled spring 4-5 in saidbore bears against said shoulder and operates to yielding hold said stopin extended position in engagement with the lugs 16 on the holder bars15.

attached to the stop 40 slides in the frame 10 and on the outer endthereof is a collar 4LT having an inner cam surface 48. An. arm 49slidabl'e in a guide 50 on the frame, is furnished with a handle 51, forshifting the same, and is formed with depressions 52 and 53 therein, inwhich a latch spring 54L engages to yieldingly secure said arm againstdisplacement. The end of said arm opposite .said handle is bifurcated toreceive the rod 46 and is formed with a wedgeshaped cam surface 55 toengage the cam surface 48 on said, collar 47. In one position of the arm49, the coiled spring 45 is free to-hold the stop L0 in engagement with.the lugs 16 on the holder bars 15. In shifting said arm forward fromthis position,

.thecam surface .55 on the arm engages the cam surface 48 on the collar4:7, thus with drawing "the stop LO' from the lugs 16,

A rod 46 against the action of the coiled; spring 41.5. Continuedmovement of the arm 4. 9 to position wherein the latch spring 54:registers with the depressionI in said arm shifts the collar a? upon ashoulder '56 on said arm and results in securing the stop 40 in in:operative position. Reverse movementof the arm again permits thefunctioning of the coiled spring 45.

To provide for readily andaccur-ately adjusting the dies, I havesupplied an indicator 57 and a graduated scale 58, the former beingremova-bly applied to one of the shafts 11, while the latter is fixeduponthe; frame" to effectually eject the creased stock from said femaledie.

Changes in the-specific form of my invention, as herein disclosed, maybema-de within the scope of what is claimed without departing from thespirit of my invention.

Having described my invention what I claim as new and" desire to protectby Letters Patent is:- v

1. In a device oftheclass described, coacting male and female dies, theformer con'iprising a reversible bar embodying creasing elements ofdifferent widths and thicknesss and thelat'ter including laterallyexpansible and contractible members capable of adjustment to suit thedifferent creaslng elements of the male die, and a yielding sent betweensaid expansible and contractible inen'ibers designed to adapt itself tothe the Various widtl sof the different creasing elements.

2. In a device, of the class described, coacting male and female dies,the former comprising a reversible bar embodying creasing elementsofdilferent widths and thickness and the latter including laterallyexpansible and contractible members capa ble of adjustment to suit thedifferent ereasing elements of the male die, and a yielding seat betweensaid expansi'ble' and contractible members'designed to adapt itself tothe various widths of the different creasing ele-- ments and also'serveas a stripper for the female die. i

3. In a device of' the, class described, a frame, companion rotorsrevoluble in said frame, coacting dies carried'laterally on said rotorsand capable of adjustment thereon and a stop on said frame designed to,secure said ,dies in intermeshing relation. and thus hold the. samewhilethe rotors are turned with respect thereto. I

51;. n a device of he class de i ed frame, companion rotors revoluble insaid frame and geared one with the other, die holders carried laterallyupon said rotors, means for adjustably securing said holders upon therotors, coacting die members carried: upon said holders, stops on thesides of the frame adapted to engage the opposite ends of said holderswhen the die members thereon are intermeshed and means for actuatingsaid stops.

5. In a device of the class described, die holders, a male die carriedin one of said holders, a female die on the other holder including sidemembers with threaded bores therein and supporting shafts for saidmembers journaled in said holder and having opposed threaded portionsfitted in the threaded bores in said side members, said supportingshafts being turned in unison, to open and close said. side members, bymeans includin spur gears on said shafts and a slidable raclebar meshingwith said spur gears, and a yielding, seat interposed between the sidemembers of the female die.

6. In a device of the class described, die holders, a male die carriedin one of said holders, a female die on the other holder comprising sidemembers with threaded bores therein and SLIPPOFtlDg shafts for saidmembers journaled in said holder and having opposed threaded portionsfitted in the threaded bores on said side members, said supportingshafts being designed to be turned in unison, to open and close saidside members by means including spur gears on said supporting shafts, arack-bar meshing with said spur gears and a shifting gear meshing withsaid rack.

7. In a device of the class described, rotors adapted to turn in unison,female dies adjustably mounted upon one of said rotors, male diesadjust-ably mounted upon the other rotor, each being adapted to coactwith'a female die on said first mentioned rotor and means adapted tohold the dies when intermeshed and secure the same as the rotors areturned with respect thereto.

8. In a device of the class described, a pair of rotors gearingconnecting said rotors, female dies adjustably mounted upon one of saidrotors, male dies a-djustably mounted upon the other rotor, each beingadapted to coact with a female die on said first mentioned rotor, meansadapted to hold the dies when intermeshed and secure the same in suchrelation as the rotors are turned with respect thereto, an indicatoradapted to turn with one of said rotors and a fixed graduated scale,adjacent said indicator, by which adjustment of the rotors with respectto the 'dies thereon may be readily and accurately determined.

9. In adevice of the class described, co acting male and female dies,the latter including laterally expansible and contractible memberscapable of adjustment to suit male dies vof different thickness and ayielding seat between said eXpansible and contractible members.

10. In a device of the class described, coacting male and female dies,the former comprising a reversible bar embodying creasing elements ofdifferent thickness and the latter including laterally expansible andcontractible members capable of adjustment to suit the differentcreasing elements of the male die.

11. In a device of the class described, a frame, a pair of revolublesupports in. said frame, longitudinally arranged die holders, adjustablymounted. upon said. supports, each holder being supplied at the endsthereof with lugs, die members carried by said holders, opposed stops insaid frame slidable axially with respect to said revoluble supports andadapted to engage the lugs at both ends of companion holders, when thedie members thereon are in mesh, means for yieldingly holding said stopsin engagement with said lugs and means for withdrawing the stops fromthe lugs.

12. In a device of the class described, a pair of rotors cooperatingdies carried upon said rotors and capable of adjustment thereon andmeans to maintain the relative positions of the dies as the rotors areturned to secure different adjustments of said dies with respectthereto.

13. In a device of the class described, coacting male and female dies,the latter including a yielding seat and co -operating crease formingmembers fixed with respect to the yielding seat, said male die beingdesigned to' pass between said crease forming members and present aconcave surface to said seat.

14. In a device of the class described, a reversible male die and afemale die, the former presenting concave bearing surfaces to the seatof the latter.

15. In a device of the class described, coacting male and female dies,the latter having a yieldin seat for the bearing surface of the formerand including co-operating crease forming member's fixed with respect tosaid yielding seat.

In testimony whereof, I have signed my name to this specification.

SWAN SMITH.

